In just withdrew the electrical network the high-pressured shunted capacitor 端子 to have the certain surplus voltage. This kind of surplus voltage like cannot promptly drop to the permissible value below, can brings the harm to operator's safety and the capacitor safe operation. In therefore all installs in the majority of high-pressured shunted capacitor has the discharging resistance. The country standing operating procedure, these install in the capacitor the discharging resistance ought to be able to withdraw the electrical network after the capacitor in 10min from to reduce the capacitor 端子 surplusvoltage to 75V and below. This in discharging resistance resistance number may use the type (1) to carry on the computation, namely:

In the formula: R - in discharging resistance (M Omega);
The t - voltage from falls to the UR time (s);
C - capacitor electric capacity (mu F);
UN - capacitor rated voltage (kV);
UR - capacitor surplus voltage (kV)
T = 10×60s, UR = 0. 075kV substitution type (1) may result in:

In order to prevent the capacitor when is investing again produces oversized flowing rapidly, the national standard also stipulated "when the capacitor puts the operation, its 端子 surplus voltage should not surpass its rated voltage 10%", now UR = 0. 1UN substitution (1) formula:

In the formula: The t1 - capacitor 端子 surplus voltage from reduces to 0. 1UN time
Because is the identical Taiwan Telegraphic Transmission vessel, therefore its internal discharging resistance is same. (2) and the type (3) may result in by the type:

Namely, the capacitor invests again hour during the most the gap may use the type (4) to calculate.
Gives an example: Rated voltage forthe high-pressured shunted capacitor, it withdraws after the electrical network to hour during the most which invests again the gap is: